Finding the Fourth Proportional to 9,081.30, 13,616.48 and 5,921.09

Step by Step Solution

1. Step 1: Write the proportion equation
   9,081.30 : 13,616.48 = 5,921.09 : x
2. Step 2: Convert to fraction form
   9,081.30/13,616.48 = 5,921.09/x
3. Step 3: Cross multiply
   9,081.30x = 13,616.48 × 5,921.09
4. Step 4: Simplify right side
   9,081.30x = 80,624,350.28
5. Step 5: Solve for x
   x = 80,624,350.28/9,081.30
6. Step 6: Final answer
   x = 8,878.06